Process for manufacturing tie-plates.



E. H. BELL.

PROCESS FOR MANUFACTURING TIE PLATES.

APPLICATION FILED AUCLIB, 1911.

1,08%889, Patented Mar. 10, 1914;

2 SHEETS-SHEET I.

"gGQmwa 39 cuLuAuuA PLANOGRAl-H C0,. WASHINGTON. n. c.

E. H. BELL.

PROCESS FOR MANUFACTURING TIE PLATES.

APPLICATION FILED $110.18. 1911.

Patented Mar. 10, 1914.

2 SHEETS-SHEET 2.

weamx ITEM STATES PATENT OFFICE.

EDWIN H. BELL, OF CHICAGO, ILLINOIS.

PROCESS FOR MANUFACTURING TIE-PLATES.

To all whom it may concern Be it known that I, EDWIN H. BELL, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Processes for Manufacturing Tie-Plates; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an improvementin the process of manufacturing railway tieplates of the kind made of rolled metal and in which the tie-plate is provided on its upper surface at one end with an elevated part or rib forming a rail-abutting shoulder and at its opposite end with elevated spikehead seats having upwardly facing bearing surfaces or seats for contact with the annular downwardly facing shoulders on the heads of screw spikes extending through the tie-plate. The said rib at either side of the rail-abutting shoulder is so formed on its upper surface as to provide upwardly facing seats for the heads of the screw spikes extending through the tie-plate adjacent said shoulder.

The invention consists of the matters hereinafter described and more particularly pointed out in the appended claim.

In order to illustrate my improved process, I attach hereto drawings, in which Figure 1 is a perspective view illustrating a series of tie-plate blanks, as they appear when the continuous plate from which they have been rolled, has been severed along transverse lines separating the tie-plate blanks; Fig. 2 is a top plan view of the continuous plate after ithas been rolled to form tie-plate blanks and before the same has been severed to separate the said blanks; Fig. 3 is a view representing a section through a pair of rolls adapted for rolling my improved tie-plates in accordance with my improved process; Fig. 4 is a view representing a front elevation of the coacting surfaces of the said rolls; Fig. 5 is a view representing a fragmentary section through Fig. 3 in a plane indicated by the line 55 thereof.

Referring now to the drawing, 10 indicates the continuous plate from which the tie-plates are rolled and which is of uniform Specification of Letters Patent.

Application filed August 18, 1911.

Patented Mar. 10, 1914.

Serial No. 644,866.

cross-section before it passes between the rolls 11 and 12 and which is formed by said rolls into a continuous plate 13 consisting of a plurality of successive tie-plate blanks 13 arranged end to end (see Figs. 2 and 3). The continuous plate 13 is then severed along dotted lines 13 13 to separate the said tieplate blanks from each other.

14 indicates an elevated part or rib formed at one end of each tie-plate blank and having a flat upright face 14E extending transversely of the plate and constituting a railabutting shoulder. The tie-plate is designed to have round spike holes through the ends of the rib 14, and said rib exterior to the location of said spike holes is formed to provide elevated spike-head seats 15, 15, having upwardly facing bearing surfaces or seats for contact with the annular downwardly facing shoulders on the heads of the screw spikes which also engage and bear upon the inclined top surface of the base-flange of the rail, and the spike-head seats 15, 15 are inclined to correspond with the inclination of the shoulders of the spike-heads, so that the latter will have firm bearing both on the rail flange and upon the spike-head seats. The part of the rib 14; between the elevated seats 15, 15, is shown as formed by means of a plurality of rounded projections 14:, 1 1 joined with each other, and with the said seats so as to form in effect a continuous rib, although they need not necessarily be so formed. Such construction is preferred, however, in order to facilitate the formation of the rib in the process of rolling the plate, as set forth in my prior Patent No. 879,238, dated February 18th, 1908. As shown in the drawings, the upright face 14 of the rib 1 1 is rabbeted or set back adjacent the seats 15, 15, as indicated at 16, 16, in order to provide for the shifting or distortion of the metal which takes place in punching round holes through the plate, in a manner to bring the inner sides of the holes in line with the vertical face of the rail-abutting shoulder; the effect of the punching at a point close to the shoulder and in such manner as to cut through the same is to force the metal outwardly from the plane of the faces 16, 16, so as to form protuberances opposite the hole which project into the plane of the rail-abutting shoulder lef This feature of the plate forms no part of the present invention, the same being covered in a process described in an application filed by me on the 10th day of March, 1911, Serial No. 613,636.

19, 19 indicate elevated spike-head seats on the opposite side of the rail seat of the tie-plate through which round spike holes are designed to be made and which are adapted to form bearing surfaces for the annular shoulders of the heads of the spikes extendingthrough that side of the tie-plate. It is apparent that the distance X between the shoulders 19 and the face 14 of the railabutting shoulder must be constant for all of the tie-plate blanks and to roll plates with this distance constant is the object of the present invention. In the process of rolling tie-plates of this kind, as at present carried on, from a continuous length of plate, the tie-plate blanks are so formed that the elevated spike-head seats 19, 19 of each plate are made continuous with the elevated part or rib 14 providing the railabutting shoulder 14 and the elevated spikehead seats 15, 15, of the succeeding tie-plate blank, so that when the continuous plate is severed into the separate tie-plate blanks, the said elevated parts at each end of the tieplate blank extend to the ends thereof. The difficulty with this method of rolling the tieplate is that while it is possible in thus rolling the plate, to maintain a substantially uniform distance between the rail-abutting shoulders of successive blanks, it is almost impossible to maintain in the successive tieplate blanks of the continuous plate a uniform distance between the railabutting shoulder at one end and the elevated spikehead seats at the other end of the successive tie-plate blanks. As it is absolutely essential that this latter-mentioned distance shall be uniform, the process heretofore carried out resulted in the formation of tie-plate blanks, many of which had to be discarded because of the lack of uniformity in the said distance.

In carrying out my process I so form the face of the upper roll 11, that is to say, the face of the roll which forms the top surface of the tie-plate blanks, that the parts 30 of the continuous plate between the elevated spike-head seats 19, 19 adjacent the one end of each tie-plate blank and the rib 14: providing the rail abutting shoulder 14 and the elevated spike-head seats 15, 15 at either side thereof adjacent the other end of the succeeding tie-plate blank are rolled to the same cross-sectional form as the main part of the tie-plate blanks. In rolling the blanks in this way, the distances separating the rail abutting shoulders 1 1 of the successive blanks may vary, but the distances separating the elevated spike-head seats 19 from the rail abutting shoulder 14* of each blank is maintained constant.

The face of the roll 11 is provided with recesses 20 into which the metal which forms the elevated spike-head seats 19 is adapted to be forced and with recesses 21 into which the metal, which forms the rib 14 and the elevated spike-head seats 15, is adapted to be forced. Between said recesses is located a transversely extending part 22 in the face of the roll which is substantially identical in crosssection with the part 9.2 which forms the main part of the tie-plate blank constituting the seat for the rail.

In the case of the manufacture of the particular tie-plate blank illustrated in the drawings, the face of the roll 11 is also provided with parallel annular ribs 35 by means of which the top surface of the tie-plate is provided with corrugations 36 adapted to extend transversely of the rail seat.

I claim as my invention The process of rolling from a continuous plate or billet a succession of integrally connected tie-plate blanks each provided adjacent one end with a transverse rib forming a rail abutting shoulder and elevated spikehead seats at either side thereof and adjacent its other end with elevated spike-head seats, which consists in rolling the billet so that the tie-plates are formed end to end with their lengths extending in the direction of the length of the billet and in rolling the parts of the billet intermediate said transverse rib of one tie-plate blank and the elevated spike-head seats of the proximate blank to the same cross-sectional form as the main part of the tie-plate blanks.

In testimony, that I, claim the foregoing as my invention I afiix my signature in the presence of two witnesses, this Mth day of August A. I). 1911.

EDIVIN H. BELL.

lVitnesses KARL IV. DoLL, GEORGE E. VVILKINS.

Copies of this patent may beebfaind for five c'nts eabhfby addressing the Commissioner of Eatents, Washington, D. G. 

